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A case of a placental site trophoblastic tumor |
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| Authors: | Fujihiko Suzuki Akira Saito Kazuhisa Ishii Akihiko Yamamura Michio Matsumoto Masanobu Eguchi Masataka Tanno Kunio Mizuguchi Yoshinori Hosokawa Koichi Suda Sachiko Takase |
| Affiliation: | 1. Clinical Laboratory, Juntendo University School of Medicine, Urayasu Hospital, 2-1-1, Tomioka, 279, Urayasu, Japan 2. Department of Pathology, Juntendo University School of Medicine, 2-1-1, Hongo, Bunkyo-ku, 113, Tokyo, Japan 3. Department of Obstetrics and Gynecology, Katsunan Hospital, 3-4-32, Toudaijima, 279, Urayasu, Japan |
| Abstract: | A rare placental site trophoblastic tumor (PSTT) in a 39-year-old female was studied. This tumor, protruding into the uterine cavity, was histologically similar to tumors in previously reported cases of PSTT. Ultrastructurally, the characteristic finding was the presence of perinuclear filaments. Also, the tumor cells were strongly positive for hPL by immunohistochemical method. These findings suggest that this was a tumor caused by neoplastic proliferation of the extravillous intermediate trophoblast. |
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